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kernel BUG at fs/f2fs/segment.c:3481!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 9210 Comm: syz.3.850 Not tainted 6.6.101-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:f2fs_allocate_data_block+0x3f0c/0x3f50 fs/f2fs/segment.c:3481
Code: 21 fe 48 8b 54 24 30 e9 c6 eb ff ff e8 9d 67 ca fd 48 c7 c7 90 cc 2f 8d 4c 89 f6 e8 1e e7 95 00 e9 e2 eb ff ff e8 84 67 ca fd <0f> 0b e8 7d 67 ca fd 0f 0b e8 76 67 ca fd 0f 0b e8 6f 67 ca fd 0f
RSP: 0018:ffffc900035d7850 EFLAGS: 00010283
RAX: ffffffff83bb2e0c RBX: 0000000000000202 RCX: 0000000000080000
RDX: ffffc9000e810000 RSI: 000000000004aa0c RDI: 000000000004aa0d
RBP: 0000000000000200 R08: ffff888058bcd45f R09: 1ffff1100b179a8b
R10: dffffc0000000000 R11: ffffed100b179a8c R12: 1ffff920006baf7c
R13: 0000000000000000 R14: 0000000000003202 R15: dffffc0000000000
FS:  00007fe6b47af6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe6b47aef98 CR3: 00000000795bf000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __allocate_data_block fs/f2fs/data.c:1421 [inline]
 f2fs_map_blocks+0x1697/0x3c00 fs/f2fs/data.c:1601
 f2fs_expand_inode_data+0x5c2/0x970 fs/f2fs/file.c:1837
 f2fs_fallocate+0x416/0x8a0 fs/f2fs/file.c:1940
 vfs_fallocate+0x58e/0x700 fs/open.c:324
 ksys_fallocate fs/open.c:347 [inline]
 __do_sys_fallocate fs/open.c:355 [inline]
 __se_sys_fallocate fs/open.c:353 [inline]
 __x64_sys_fallocate+0xc1/0x110 fs/open.c:353
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe6b398eb69
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe6b47af038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fe6b3bb6160 RCX: 00007fe6b398eb69
RDX: 000000000000fc01 RSI: 0000000000000000 RDI: 000000000000000a
RBP: 00007fe6b3a11df1 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000001000f4 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe6b3bb6160 R15: 00007ffebc47e708
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:f2fs_allocate_data_block+0x3f0c/0x3f50 fs/f2fs/segment.c:3481
Code: 21 fe 48 8b 54 24 30 e9 c6 eb ff ff e8 9d 67 ca fd 48 c7 c7 90 cc 2f 8d 4c 89 f6 e8 1e e7 95 00 e9 e2 eb ff ff e8 84 67 ca fd <0f> 0b e8 7d 67 ca fd 0f 0b e8 76 67 ca fd 0f 0b e8 6f 67 ca fd 0f
RSP: 0018:ffffc900035d7850 EFLAGS: 00010283
RAX: ffffffff83bb2e0c RBX: 0000000000000202 RCX: 0000000000080000
RDX: ffffc9000e810000 RSI: 000000000004aa0c RDI: 000000000004aa0d
RBP: 0000000000000200 R08: ffff888058bcd45f R09: 1ffff1100b179a8b
R10: dffffc0000000000 R11: ffffed100b179a8c R12: 1ffff920006baf7c
R13: 0000000000000000 R14: 0000000000003202 R15: dffffc0000000000
FS:  00007fe6b47af6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe6b47aef98 CR3: 00000000795bf000 CR4: 00000000003506f0